Spherical roller bearings

      Spherical roller bearings have two rows of rollers, which mainly bear radial load, and can also bear axial load in any direction. Withstand pure axial loads. The outer ring raceway of this type of bearing is spherical, so its self-aligning performance is good, and it can compensate for the coaxiality error.

      There are two rows of symmetrical spherical rollers, the outer ring has a common spherical raceway, and the inner ring has two raceways inclined at an angle to the bearing axis, which has good self-aligning performance. The bearing can still be used normally, and the centering performance varies with the bearing size series. Generally, the allowable centering angle is 1~2.5 degrees. The load capacity of this type of bearing is large, and the bearing can withstand radial load in addition to radial load The axial load acting in both directions has good impact resistance. Generally speaking, the allowable working speed of spherical roller bearings is low.

      Spherical roller bearings are divided into two different structures: symmetrical spherical rollers and asymmetric spherical rollers according to the cross-sectional shape of the rollers. Asymmetric spherical roller bearings are early products, mainly for main engine maintenance services, newly designed main engine Symmetrical spherical roller bearings are seldom used at this time. The internal structure has been comprehensively improved, designed and optimized. Compared with the early production spherical roller bearings, it can withstand larger axial loads. The operating temperature of this bearing is lower, so it can meet the requirements of higher speed.

      The design of the spherical roller bearing enables it to have an automatic self-aligning function, that is, the bearing itself can be adjusted, and the angular alignment error between the inner and outer rings is allowed. wrong value. Whether this given value can be fully achieved depends on the design of the bearing configuration and the type of seal. under extremely high stress conditions.